CN104990786B - Slag class material Flashmelt forms the method and device of temperature uniform liquid film - Google Patents
Slag class material Flashmelt forms the method and device of temperature uniform liquid film Download PDFInfo
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- CN104990786B CN104990786B CN201510343323.5A CN201510343323A CN104990786B CN 104990786 B CN104990786 B CN 104990786B CN 201510343323 A CN201510343323 A CN 201510343323A CN 104990786 B CN104990786 B CN 104990786B
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Abstract
The invention provides the method and device that slag class material Flashmelt forms temperature uniform liquid film, this method be used as heating element heater simultaneously using platinum rhodium thermocouple thermometric, and the sample that active ingredient is slag class material is heated and melted to form that temperature is uniform, area is 0.5 × 1mm2Left and right liquid film, make it possible that on-line continuous detects the microstructure information of the metallurgical slag class materials such as the blast furnace slag, steelmaking refining slag, covering slag of high-temperature molten-state.Present invention also offers the device that Flashmelt forms temperature homogeneous liquid slag film simultaneously, the position of thermocouple can be adjusted by mircrometer gauge, slag specimen liquid film is set to be in spherical hollow space center, under the heat-insulation and heat-preservation synergy of thermocouple heating, the reflection of spherical hollow space inner surface and crustless sandwich, make uniform in molten state liquid film temperature at the spherical hollow space centre of sphere, detect ray to import from entrance window, projected away from exit window, you can realize the scanning probe to molten state liquid film.
Description
Technical field
The present invention relates to the melting of metallurgical slag class material and detection technique field, especially to blast furnace slag, steelmaking refining slag,
The melting of covering slag and other slag charges and detection technique field, and in particular to slag class material quickly forms the uniform molten state of temperature
The method and device of liquid film.
Background technology
In pyrometallurgical process, molten slag such as blast furnace slag, steelmaking refining slag, covering slag and other slag charges play cause and closed
Important effect, its effect are mainly the chemical composition, temperature and its physics in actual smelting process by controlling clinker
Chemical property is realized, and the chemical composition of clinker, microstructure directly affect the physicochemical properties of high-temperature slag.From structure
Into being studied between each material of slag based on microcosmic bonding structure, can reveal that the various physical and chemical processes of molten slag and
The essence of macroscopic property, the rule of slag physicochemical properties change is verified, reach the purpose of control metallurgical reaction process.Therefore
The physicochemical properties and microstructure of the slag class materials such as analysis molten slag are all in metallurgy science and engineering field all the time
Research emphasis.
In current research and analysis, because the temperature of metallurgy molten slag is high, exist and existing spectrum microstructure analysis
The problems such as difficulty of matching is big, it is difficult to directly detect.In practice, it is generally recognized that the structure and high temperature of liquid slag quenched glass state
The structure of lower molten state has similarity, therefore is to speculate slag by the micro-structural of normal temperature spectrum analysis quenched glass state mostly
Associated in the structure of high-temperature molten-state and its with macroscopical physicochemical property.
However, the spectrum of the simply a certain unstable state measured using quenched glass state, even same amorphous state sample
The difference in structure can all be presented due to cooldown rate difference, therefore the structure of quenched glass state can not correctly transmit actual melt
Melt the structural information of state melt cinder.
Therefore, the metallurgical slag class material such as blast furnace slag, steelmaking refining slag, covering slag is examined only under high-temperature molten-state
Survey and analysis could really obtain its accurate chemical composition, microstructure, and then analyze its physicochemical properties.
The content of the invention
For deficiencies of the prior art, it is equal quickly to form temperature it is an object of the invention to provide slag class material
The method and device of even molten state liquid film.
To achieve these goals, the technical solution adopted by the present invention is as follows：
The method that slag class material Flashmelt forms temperature uniform liquid film, it is characterised in that comprise the following steps：
1）The powder of slag class material is well mixed to form pasty state slag charge as sample with alcohol；
2）With closed heating devices heat, the heater is the heater that thermocouple is formed, and thermocouple head is bent
W shapes are formed, materialses and is placed at the W heads of thermocouple, close heater；
3）Thermocouple both ends are separately fixed on two binding posts of electrode tip holder, then two binding posts are led to respectively
Cable is crossed to be connected with temperature control system；
4）Start-up temperature control system makes thermocouple heat up, and sample is absorbed heat energy, ultimately forms molten state liquid film, and this is molten
Melt state liquid film and be used for ray detection.
Further, the thermocouple is platinum rhodium thermocouple, and the diameters of two wire electrodes of the thermocouple is 0.5mm, two
The spacing of wire electrode is 1mm.
Further, the width of described molten state liquid film is 1mm, thickness 0.5mm.
The device of temperature uniform liquid film is formed for Flashmelt, it is characterised in that including inner housing, shell body, heating
With thermocouple, electrode tip holder and sealing-plug；Described inner housing is arranged in shell body, and the space among the two forms housing folder
Layer, described inner housing have a spherical hollow space；Described thermocouple and electrode tip holder is arranged in spherical hollow space, and the electrode tip holder connects
One end of line terminals is electrode tip, and directly over the centre of sphere of spherical hollow space, the other end is fixing end, is connected on inner housing；
The head of thermocouple is bent to form W shapes, and the hot junction of thermocouple is located at W heads intermediate vertex, and pasty state slag specimen is positioned over the W of thermocouple
Head zone, thermocouple both ends are separately fixed on two binding posts of electrode tip holder, and cable one end is connected with binding post,
The other end sequentially passes through inner housing, crustless sandwich and passed from shell body, for connecting temperature control system；The shell body top
Portion offers a circular hole communicated with spherical inner chamber as handling hole, for loading and unloading thermocouple and placing sample；With handling hole
The sealing-plug plug of matching is placed in handling hole, for sealing spherical inner chamber；Opposite two sides is respectively provided with one on the shell body
Hole, holes form two central axis weight merga pass spherical hollow space centers through inner housing and the correspondence position of crustless sandwich
Through hole to be embedded with kapton films as entrance window and exit window, the entrance window and exit window.
Further, shell body top is embedded with mircrometer gauge, and the upper end of the mircrometer gauge is adjusting knob, is arranged on shell body top
Portion, lower end are fine setting end, through crustless sandwich and are extended in inner housing, and be connected with the fixing end of electrode tip holder.
Further, a diameter of 3mm of entrance window.
Further, the kapton center membrane vertical ranges that a diameter of molten state liquid film of exit window is embedded with away from thereon
1.4 again.
Further, the lower surface of the sealing-plug is the spherical arc of indent, and the spherical arc and spherical hollow space are common
Form a complete spherical inside surface.
Further, entrance window, exit window, two kapton center membranes, high-temperature slag liquid film center point-blank.
Further, described crustless sandwich can effectively prevent heat energy dissipation for vacuum voids or full of protective gas
And heat energy is blocked to shell body transmission.
Compared with prior art, the present invention has the advantages that：
1st, have a extensive future.Method provided by the invention, can be by metallurgical slag class material Flashmelt and to form temperature uniform
Molten state liquid film, on-line continuous detection analysis high-temperature fusion liquid slag microstructure information is become possibility.
2nd, to be detected under high-temperature molten-state to the metallurgical slag class material such as blast furnace slag, steelmaking refining slag, covering slag and
Analysis is possibly realized.Kapton films can be embedded with from device provided by the present invention for the device for forming slag charge molten state liquid film
Detection window import detection ray, detection is scanned to the high temperature slag charge molten state liquid film in spherical hollow space center, solution
Because the temperature of metallurgical cinder is high, exist with existing spectrum microstructure analysis difficulty of matching it is big the problem of.
3rd, utilization rate of equipment and installations is high.The hot junction of the thermocouple of the present invention is the platinum rhodium thermocouple of W heads intermediate vertex, and it can be with
The high-heat region that heat is more concentrated is formed, promotes slag specimen Flashmelt, it is equal in the liquid film temperature that W overheads are formed
It is even, stably, and the hot junction of thermocouple is in molten state liquid film, can not only have been played concurrent heating effect but also can have been accurately reflected the temperature of liquid film
Degree.
4th, the energy, extension device life-span are saved.Can be with provided by the present invention for the device for forming slag charge molten state liquid film
The radiant heat that high-temperature slag liquid film scatters and disappears into spherical cavity is set to be collected in by the reflection of spherical hollow space inner surface in spherical sky
On the slag liquid film at chamber center, the equalizing temperature of high-temperature slag liquid film is on the one hand realized, it is same on the other hand also to reduce thermocouple
Shi Zuowei heating element heaters need power, particularly in the use temperature range allowed close to thermocouple when, such as 1600 DEG C,
Can significantly improve the life-span of platinum rhodium thermocouple.
5th, security is higher.Provided by the present invention for forming the device of slag charge molten state liquid film in inner housing and shell body
Centre is protective gas or vacuum voids as heat-insulation layer, along with the heat reflection of spherical inner chamber acts on, inside is formed
While 1500 DEG C ~ 1600 DEG C of high-temperature molten-state liquid film, shell is still suitable with environment temperature, ensure that equipment and operating personnel
Safety.
Brief description of the drawings
Fig. 1 is the structural representation of device in the present invention；
Fig. 2 is molten state liquid film schematic diagram in the present invention；
Fig. 3 connects scheme of installation for thermocouple in the present invention.
In accompanying drawing：1- entrance windows；2- inner housings；3- shell bodies；4- mircrometer gauges；5- sealing-plugs；6- electrode tip holders；7- is emitted
Window；8- spherical hollow spaces；9- crustless sandwiches；10- thermocouple W heads；11- molten state liquid films；12- cables.
Embodiment
The present invention is described in further detail with reference to specific embodiment.
The method that slag class material Flashmelt forms temperature uniform liquid film, it is characterised in that comprise the following steps：
1）The powder of slag class material is well mixed to form pasty state slag charge as sample with alcohol；
2）By closed heating devices heat sample, the heater is the heater that thermocouple is formed, thermocouple
Head is converted into W shapes, materialses and is placed in the W head zones of thermocouple, closes heater；
3）Thermocouple both ends are separately fixed on two binding posts of electrode tip holder, then two binding posts are led to respectively
Cable is crossed to be connected with temperature control system；
4）Start-up temperature control system makes thermocouple heat up, and sample is absorbed heat energy, ultimately forms molten state liquid film, and this is molten
Melt state liquid film and be used for ray detection.
As a preferred embodiment, the thermocouple is platinum rhodium thermocouple, two wire electrodes of the thermocouple it is straight
Footpath is 0.5mm, and the spacing of two wire electrodes is 1mm.
As a preferred embodiment, the width of described molten state liquid film is 1mm, thickness is 0.5mm or so.
Referring to Fig. 1, Fig. 2, form the device of temperature uniform liquid film for Flashmelt, including inner housing 2, shell body 3 plus
Hot thermocouple, electrode tip holder 6 and sealing-plug 5；Described inner housing 2 is arranged in shell body 3, and the space among the two forms shell
Interlayer body 9, described inner housing 2 have a spherical hollow space 8；Described thermocouple and electrode tip holder 6 is arranged in spherical hollow space 8, should
One end that electrode tip holder 6 has binding post is electrode tip, and directly over the centre of sphere of spherical hollow space 8, the other end is fixing end, connection
On inner housing 2；The head of thermocouple is bent into W shapes, and the hot junction of thermocouple is located at W heads intermediate vertex, and pasty state slag specimen can be put
Be placed at thermocouple W heads 10, thermocouple both ends are separately fixed on two binding posts of electrode tip holder, the one end of cable 12 with
Binding post is connected, and the other end sequentially passes through inner housing 2, crustless sandwich 9 and passed from shell body 3, for connecting temperature control
System, its connected mode reference picture 3；The top of shell body 3 offers a circular hole communicated with spherical inner chamber as handling
Hole, for loading and unloading thermocouple and placing sample；The plug of sealing-plug 5 matched with handling hole is placed in handling hole, spherical for sealing
Inner chamber 8；Opposite two sides is also respectively provided with a hole, correspondence of the holes through inner housing 2 and crustless sandwich 9 on the shell body 3
Position, the through hole at two centers of central axis weight merga pass spherical hollow space 8 is formed using as entrance window 1 and exit window 7, it is described
Entrance window 1 and exit window 7 are embedded with kapton films.
As a preferred embodiment, the top of shell body 3 is embedded with mircrometer gauge 4, the upper end of the mircrometer gauge 4 is revolved for regulation
Button, be arranged on the top of shell body 3, lower end is fine setting end, through crustless sandwich 9 and is extended in inner housing 2, and with electrode tip holder 6
Fixing end connection.The use of mircrometer gauge 4 can make thermocouple W heads to being finely adjusted during the position of the thermocouple after installation
10 at the centre of sphere underface of spherical hollow space 8.
As a preferred embodiment, a diameter of 3mm of entrance window 1.
As a preferred embodiment, the kapton that a diameter of molten state liquid film 11 of exit window 7 is embedded with away from thereon
1.4 times of center membrane vertical range, to ensure ray through the central angle of the outside projection in liquid film center as 70 ° or so.
As a preferred embodiment, in order to be better protected from heat energy dissipation, the lower surface design of the sealing-plug 5
Into the spherical arc of indent, the spherical arc collectively forms a complete spherical inside surface with spherical hollow space 8.Molten state liquid film
The lost radiant heat energy in 11 and thermocouple W heads 10 can be collected in the centre of sphere by the way that the inner surface of spherical hollow space 8 is fully reflective
On the molten state liquid film 11 at place.
As a preferred embodiment, entrance window 1, exit window 7, two kapton center membranes, molten state liquid film 11
Center point-blank, so passes through detection data during molten state liquid film 11 most accurate in detection ray.
As a preferred embodiment, described crustless sandwich 9 is for vacuum voids or full of protective gas, Neng Gouyou
Prevent heat energy dissipation and block heat energy to be transmitted to shell body 3 to effect.
It is this that the present invention, which makes slag class material Flashmelt form the concrete operation step of temperature uniform liquid film and operation principle,
Sample：First, the diameter and spacing of thermocouple two are adjusted according to the width of requirement of experiment liquid film and thickness, such as width × thickness
For 1 × 0.5mm2Slag class material molten state liquid film, a diameter of 0.5mm platinum rhodium thermocouples can be used, it is in W types to be fabricated to head
The crown, the hot junction of thermocouple are placed in the centre on the W crowns, and spacing is 1mm on the inside of two thermocouples；Then, thermocouple both ends are distinguished
It is fixed on two binding posts of electrode tip holder 6, by the position of the micro- 4 tune thermocouple of mircrometer gauge, at the hot junction for making W head thermocouples
In the center of spherical hollow space 8 slightly below.The powdered granule of slag class material and suitable alcohols are mixed, then take appropriate pasty state slag charge to put
At thermocouple W heads 10 in the spherical hollow space 8 of device, using the locking device of sealing-plug 5.Rest temperature control system makes
Electric heating thermo wires heats up by preset program, while gives the sample preheating being previously placed at thermocouple W heads 10, is melted until melting is formed
Melt state liquid film 11.Thermocouple W heads 10 provided by the invention are concentrated with high-heat region, after promoting slag specimen Flashmelt,
Molten state liquid film is formed above thermocouple W heads 10, in the synergy that the inner surface reflection of device spherical hollow space 8 collects
Under, the temperature of molten state liquid film 11 that the present invention is formed is uniformly, stably, accurately.The present invention is using the entrance window from crust of the device body 3
1 imports detection ray, then is projected away from the exit window 7 of device, so as to the molten state liquid film at the centre of sphere of spherical hollow space 8
11 are scanned detection.Simultaneously because thermocouple head is in W types, even if placement is more steady vertically by the liquid film so formed such as Fig. 2
It is fixed, while the hot junction of thermocouple is among liquid film, can be accurately reflected the temperature of liquid film, be facilitated on-line real-time measuremen.
Present invention is specifically directed to the Microstructure Information of online real-time detection high-temperature molten slag class material, solves because metallurgy is molten
The temperature of slag is high, exist with existing spectrum microstructure analysis difficulty of matching it is big the problem of and design, while this liquid film that formed
Method and apparatus can also promote observation similar to the liquid film forming and metamorphosis of newborn product suitable for other.
The above embodiment of the present invention is only example to illustrate the invention, and is not the implementation to the present invention
The restriction of mode.For those of ordinary skill in the field, other can also be made not on the basis of the above description
With the change and variation of form.Here all embodiments can not be exhaustive.It is every to belong to technical scheme
Row of the obvious changes or variations amplified out still in protection scope of the present invention.
Claims (6)
1. the device of temperature uniform liquid film is formed for Flashmelt, it is characterised in that use including inner housing, shell body, heating
Thermocouple, electrode tip holder and sealing-plug；
Described inner housing is arranged in shell body, and the space among the two forms crustless sandwich, and described inner housing has a ball
Shape cavity；
Described thermocouple and electrode tip holder is arranged in spherical hollow space, and one end that the electrode tip holder has binding post is electrode tip, position
Directly over the centre of sphere of spherical hollow space, the other end is fixing end, is connected on inner housing；The heating position of thermocouple is bent to form
W shapes, the hot junction of thermocouple are located at W heads intermediate vertex, and pasty state slag specimen is placed at thermocouple W heads, and thermocouple both ends are solid respectively
It is scheduled on two binding posts of electrode tip holder, cable one end is connected with binding post, and the other end sequentially passes through inner housing, housing
Interlayer simultaneously passes from shell body, for connecting temperature control system；
A circular hole communicated with spherical inner chamber is offered at the top of the shell body as handling hole, for loading and unloading thermocouple and putting
Put sample；The sealing-plug plug matched with handling hole is placed in handling hole, for sealing spherical inner chamber；
Opposite two sides is respectively provided with a hole on the shell body, and holes is through inner housing and the correspondence position of crustless sandwich, shape
Into two central axis weight merga pass spherical hollow space center through hole using as entrance window and exit window, the entrance window and go out
Penetrate window and be embedded with kapton films；
The shell body top is embedded with mircrometer gauge, and the upper end of the mircrometer gauge is adjusting knob, is arranged at the top of shell body, lower end is
End is finely tuned, through crustless sandwich and is extended in inner housing, and be connected with the fixing end of electrode tip holder.
2. the device according to claim 1 that temperature uniform liquid film is formed for Flashmelt, it is characterised in that entrance window
A diameter of 3mm.
3. the device according to claim 1 that temperature uniform liquid film is formed for Flashmelt, it is characterised in that exit window
Be embedded with away from thereon 1.4 times of kapton center membrane vertical ranges of a diameter of molten state liquid film.
4. the device according to claim 1 that temperature uniform liquid film is formed for Flashmelt, it is characterised in that described close
The lower surface of blocking is the spherical arc of indent, and the spherical arc collectively forms a complete spherical interior table with spherical hollow space
Face.
5. the device according to claim 1 that temperature uniform liquid film is formed for Flashmelt, it is characterised in that incident
Window, exit window, two kapton center membranes, high-temperature slag liquid film center point-blank.
6. according to any described device for being used for Flashmelt and forming temperature uniform liquid film of claim 1 ~ 5, its feature exists
In described crustless sandwich can effectively prevent heat energy dissipation and block heat energy outside for vacuum voids or full of protective gas
Housing transmission.
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| CN201510343323.5A CN104990786B (en) | 2015-06-19 | 2015-06-19 | Slag class material Flashmelt forms the method and device of temperature uniform liquid film |
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| CN104990786B true CN104990786B (en) | 2017-12-05 |
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| CN107462449B (en) * | 2017-08-02 | 2020-10-16 | 重庆大学 | Sample preparation method based on hot wire method |
| CN109855751B (en) * | 2019-01-29 | 2020-09-22 | 重庆大学 | Optical calibration device and method for high-temperature slag temperature |
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| CN2036955U (en) * | 1988-10-08 | 1989-05-03 | 谭翠梅 | Internal heat-sealing type dual-temp. thermal plating device |
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| CN2144787Y (en) * | 1992-11-03 | 1993-10-27 | 上海玻璃器皿二厂 | Efficient total reflection electrothermal transducer formula warm-air drier |
| CN101293775A (en) * | 2007-04-27 | 2008-10-29 | 四川君立投资集团有限责任公司 | Industrial standard blackbody |
| CN103045787B (en) * | 2013-01-21 | 2014-09-10 | 重庆大学 | Method and device for observing growth process of iron whiskers on surfaces of iron ore powder particles |
| CN104534879B (en) * | 2015-01-14 | 2016-06-08 | 中国科学院合肥物质科学研究院 | The method of synchrotron radiation ��-XRD technology in site measurement fusion method crystal growth microstructure and minicrystal growth furnace |
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| CN2036955U (en) * | 1988-10-08 | 1989-05-03 | 谭翠梅 | Internal heat-sealing type dual-temp. thermal plating device |
| CN101782544A (en) * | 2010-03-02 | 2010-07-21 | 济南大学 | Device for testing metal melt electrical resistivity and testing method therefor |
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